Hey Guy's does anybody know how to save a song that's been recorded on the SD9 as a .wav file to a USB stick ?

I've recorded a session as a WAV file, named it and saved it to the SD9's internal Drive but can't figure out how to then copy and paste it or move it to an external USB stick ( without connecting it to a PC )

I can't find anything in the Manual about saving recorded songs.

Is it possible to do this or do I have to connect it to a PC to get at the recording?